My understanding from people inside the building - but also from myriad episodes of Patriots Unfiltered - is that this is how it's always been run generally. That, yes, the D.C. may choose the plays that he and others on the staff have curated for the game plan during the week of prep, but that BB has plenty of input by dint of his involvement in selecting those plays, and how situationally aggressive the approach is in calling them during games. I've heard that while the D.C. calls the plays, and there's some level of Belichick letting it be Patricia's (or whomever's) "show," BB has a strong hand in what those calls can be, and at times ARE, in the moment. The idea that Patricia unilaterally chose to coach more passively strikes me as really overstating things. If it happens, Belichick supports it. That's why I feel it's a bit shortsighted to pin things on Patricia that require the endorsement of Belichick. BB gets the credit for the good - as well he should - but he should share the blame for the bad and the ugly, too.
And, as others have posted, if Belichick thinks Patricia can be a value-add, I'm all in.
edits: typos, clarification